Sea surface temperature variability and sea-ice extent in the subarctic Northwest Pacific during the past 15,000 years

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doi: 10.1029/2012PA002292
Author(s): Max, Lars; Riethdorf, Jan-Rainer; Tiedemann, Ralf; Smirnova, Maria; Lembke-Jene, Lester; Fahl, Kirsten; Nürnberg, Dirk; Matul, Alexander; Mollenhauer, Gesine
Author Affiliation(s): Primary:
Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
Other:
Helmholtz-Zentrum für Ozeanforschung Kiel, Germany
P. P. Shirshov Institute of Oceanology, Russian Federation
Volume Title: Paleoceanography
Source: Paleoceanography, 27(3). Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0883-8305 CODEN: POCGEP
Note: In English. 86 refs.; illus., incl. 2 tables, sketch maps
Summary: Past changes in North Pacific sea surface temperatures and sea-ice conditions are proposed to play a crucial role in deglacial climate development and ocean circulation but are less well known than from the North Atlantic. Here, we present new alkenone-based sea surface temperature records from the subarctic northwest Pacific and its marginal seas (Bering Sea and Sea of Okhotsk) for the time interval of the last 15 kyr, indicating millennial-scale sea surface temperature fluctuations similar to short-term deglacial climate oscillations known from Greenland ice core records. Past changes in sea-ice distribution are derived from relative percentage of specific diatom groups and qualitative assessment of the IP25 biomarker related to sea-ice diatoms. The deglacial variability in sea-ice extent matches the sea surface temperature fluctuations. These fluctuations suggest a linkage to deglacial variations in Atlantic meridional overturning circulation and a close atmospheric coupling between the North Pacific and North Atlantic. During the Holocene the subarctic North Pacific is marked by complex sea surface temperature trends, which do not support the hypothesis of a Holocene seesaw in temperature development between the North Atlantic and the North Pacific.
Year of Publication: 2012
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; 24 Surficial Geology, Quaternary Geology; Absolute age; Algae; Alkenones; Atlantic Meridional Overturning Circulation; Bering Sea; Biomarkers; C-14; Carbon; Cenozoic; Climate change; Dates; Deglaciation; Detroit Seamount; Diatoms; East Pacific; Emperor Seamounts; Foraminifera; Framework silicates; Holocene; Ice; Invertebrata; Isotopes; Ketones; Leg 145; Leg 167; Microfossils; North Pacific; Northeast Pacific; Northwest Pacific; ODP Site 1019; ODP Site 883; Ocean Drilling Program; Ocean circulation; Okhotsk Sea; Opal; Organic compounds; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Plantae; Pleistocene; Protista; Quaternary; Radioactive isotopes; Sea ice; Sea-surface temperature; Silica minerals; Silicates; West Pacific
Coordinates: N511155 N511155 E1674607 E1674607
N414058 N414058 W1245559 W1245559
N490000 N590000 E1710000 E1520000
Record ID: 2014039754
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